Improvement in braiding-attachment for sewing-machines



A H. B OYD. Braiding Attachment for Sewing Machines.

Patented June 22 1869.

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AMOS ELBOYD, or Ro oKvILLE, MASSACHUSETTS.

Letters Patent No. 91,708, dated June 22, 1869.

IMPROVEMEfiT IN BRAIDJiN'G-ATTACHMENT FOR SEWING-MACHINES.

The Schedule referred to in these Iietters Patent and making part of the same.

To all whom it may canoe mi Be it known that I, AMOS H. Bovn, of Rockville,

in the county of Norfolk, and State of Massachusetts, have invented certain new and useful-Improvements in- Sewing-Machines, and Ido hereby declare the following to bee. full, clear, and exact description of the same, refcrencebeing had to the accompanying drawconstruction of mechanism to be attached to a sew-- ing-machine, for the purposeof making a'manufacture heretofore invented by me, called Amosine Braid, and is so' constructed that it may be attached to the sewing-machines in common use, without any material modification of the machine.

The. method of making the braid, in general, consists'in carrying two embroidery-threads, or cords, of any desired material; across the line of seam formed by the sewing-mechanism at each stitch, so that such threads will .be interwoven with the sewing-threads, and lie upon the surface of the cloth.

This is done by means of vibratingfingers or arms, each having an eye near its point, through which the embroidery-thread is de1ivered,'which fingers-vibrate across the line of the seam at each stitch, and carry each thread alternately to either side.

My invention consists in a mode of constructing and arrangingthe mechanismthat applies the embroiderythreads, or cords, as hereinafter described, so that such mechanism is a separate structure, and complete with in itself, and may be attached to or removed from a sewing-machine, as desired, and is operated by the reciprocating motion of the mechanism that operates the needle, or some other reciprocating movement corr'esponding to the same, in such a manner, that at each reciprocation of the needle-mechanism, the embroidery-arms are vibrated alternately in opposite directions, and rest a suflicient length of time to enable the sewing-threads to secure the embroidery threads to the cloth.

In the drawings A is a plate, upon which all the parts are'arrangcd, as shown.

B is a slide, working vertically in guides G G, attached to the plate A.

This slide is depressed at every depression of the needle-arm, by some part of the arm coming in contact with it, and ,again raised by the spring If], till it encounters the stop D.

F and G are the vibrating arms, which carry the embroidery-threads, which have their fulcra at H, and,

at their lower ends, eyes F and G, through which the embroidery-threads pass and are delivered.

I is a lever, having four arms, to two of which, opposite, the vibrating arms F and Gare respectively attached, by the connecting-rods F and G, and to the other two arms are attached two pawls or latches J J, which extend upward toward the slide B.

These latches are forced inward by the springs K K, so tbat'when the latch isnot held out by other meansthe inner portion of its upper end will come under the slide B.

Behind each lat-ch isv a spring-guide, L, which works in connection with a stud, L, which projects from the backside of the latch, and by means of which, when the latch rises, it'is carried outward, so that its upper end will pass freely by the lower end of the slide B as it descends. I a

When the latch descends, the stud L passes'inside of .the spring-guide, and forces it outward, until the latch arrives nearly at the lower limit of movement,

when the stud'pa sses below the spring-guide, and" allows it to spring inward.

When/the latch rises, the stud passe-s up the out-.

side of the guide, until near the upper limit of move ment, when the stud passes above the spring-guide, and is forced inward by the spring K.

By, this means, the latches are alternately forced downward byv thefslide B, which oscillates the lever I in opposite directions, and with it the arms F and G, in a perfectly-obvious manner.

If the mechanism is designed to be attached to a sewing-machine that has a needle-bar or slide, catches attached to the same may be made a substitute for the slide B, and co-operate with the other parts in the samemanner.

What I claim as my invention, and wish to secure 

